Question

the principal difference between isometric and isotonic exercises is the a. use of free weights and weight machines b. rate of calories burned during exercise c. change in muscle length during exercise d. type of muscles exercised please select the best answer from the choices provided.

Explanation:

Isometric exercises involve muscle contraction without a change in muscle length, while isotonic exercises involve muscle contraction with a change in muscle length. This is the key differentiating factor between the two types of exercises.

Answer:

C. change in muscle length during exercise